Smoke-jack.



' E- HARGOURT.

SMOKE non. APPLICATION FILED OUT. 12, 1995.

Patented Sept; 29, 1908.

UNITED STATES PATENT Fries,

RICHARD HARCOURT, OF TORO NTO, ONTARIO, OANADA,'ASSIGNOR OF ONE-HALF TOHENRY HAGIN VAUGHAN, OF MONTREAL, CANADA.

I SMOKE-JACK.

Patented Sept. 29, 1908.

Application filed October 12, 1905. Serial No. 282,519.

To all whom it may concern-.-

Be it known that I, RICHARD HARooURT, of the city of Toronto, in theProvince of Ontario, Canada, have invented certain new and usefulImprovements in Smoke-Jacks; and I do hereby declare that the followingis a full, clear, and exact description of the same.

My invention relates particularly to smoke jacks for engine houses.

The invention may be said briefly to consist of a smoke jack carried bythe roof of an engine house and comprising a main jack or outer shellextending from the roof upward and permanently open at the top and also0 en at the bottom so that hot gases beneath t e roof may freely enterthe same at the level of such roof, and an inner conductor extendingfrom a point near the top of the main jack downward to a oint which willbe close to a locomotive smo e stack to receive the hot gases therefrom,said inner jack being fixed within the main jack and sufficientlysmaller in cross-section than such jack to pro vide a substantialventilating flue between them. A drop jack is preferably carried by thelower end of the inner conductor in which I specification in whichlikesymbols indicate e same parts and wherein Figure 1 is a longitudinalvertical sectional view of a square smoke jack provided with myinvention; Fig. 2 is a similar view of a round smoke jack provided withmy invention, and Figs. 3 and 4 are horizontal sectional views taken onthe respective lines A A and B B Figs. 1 and 2.

The main jack or outer shell 1) extends from the roof A of the enginehouse upwards and it is permanently open at its upper end and providedwith a conical top 0, while its bottom is also 0 en as at b and indirect communication wit the space beneath and in the immediate vicinityof the roof so that the smoke and hot gases collecting at the top of thehouse can be drawn off. A smaller ack f within the main jack extendsfrom a short distance below the roof to within a short distance of thetop of the main jack and it is secured rigidly. in place by a series ofbraces .or

spacing supports g, and the lower end there of is preferably flared asat f (Fig. 1), while the engine house is induced by the hot gases ofcombustion drawn upwardly from the locomotive (indicated at 1%) when thelatter is standing with its smoke stack beneath the flared end f of theinner jack (as in Fig. 1), or when the drop jack d has been lowered overthe mouth of such smoke stack (as in Fig. 2) thus creating a suction inthe flue 7c and drawing'the atmosphere of the engine house near the roofout through the opening 6. The house being in this manner cleared of thesmoke given off by the locomotive before it arrives with its smoke stackbeneath the jack.

What I claim is as follows 1. The combination with the roof of an enginehouse of a smoke jack comprising a main jack or outer shell extendingfrom the roof upward, open at the top and also freely opening in to theengine house at the roof level 'so that hot gases beneath the roof mayfreely enter the shell at the level of such roof, and an inner conductorof less diameter than the main jack and located within same to receivethe heated gases from a locomotive stack beneath such inner conductorwhereby the smoke and steam which accumulates under the roof is forciblysucked through the outer shell by means of a draft induced by the heatedgases issuing from the top of the inner conductor and passing upwardthrough the main jack substantially as described.

2. The combination with the roof of an engine house, of a smoke jackcomprising a main jack or outer shell extending from the roof upward,open at the top and also freely opening in to the engine house at theroof level so that hot gases beneath the roof may freely enter the shellat the level of such roof, and an inner conductor of less diameter thanthe main jack and located within same so that it shall extend above theroof of the engine house to a point near the top of the main jack butbeing of less height than the main jack and adapted to receive theheated gases from a locomotive stack beneath such inner eonductor,whereby the smoke and steam which accumulates under the roof is forciblysucked through the outer shell by means of a draft induced by the heatedgases issuing from the top of the inner conductor and passing upwardthrough the main jack substantially as described.

3. The combination with the roof of an engine house of a smoke jackcomprising a main jack or outer shell extending from the roof upward,open at the top and also freely opening into the engine house at theroof level so that hot gases beneath the roof may freely enter the shellat the level of such roof, an immovable inner conductor of less diameter than the main jack and located within same so that it shall extendin part above the roof of the engine house and in part below it, thepart above the roof being of less height than the main jack and the partbelow extending downwardly to a point which will be close to alocomotive smoke stack to receive the heated gases from such stack,whereby the smoke and steam which accumulates under the roof is forciblysucked through the outer shell by means of a draft induced by the heatedgases issuing from the top of the inner conductor and passing upwardthrough the main jack, and spacing supports or braces securing the topof the inner eonductor to the upper portion of the main jack and thelower end of such inner conductor to the lower end of the main jack.

4. The combination with the roof of an engine house, of a smoke jackcomprising a main ack or outer shell extending from the roof upward,open at the top and also freely opening into the engine house at theroof level so that hot gases beneath the roof may freely enter the shellat the level of such roof, an immovable inner conductor of less diameterthan the main jack and located within same so that it shall extend inpart above the roof of the engine house and in part below it, the partabove the roof being of less height than the main jack and the partbelow extending donniward to a point which will be close to a locomotivesmoke stack to receive the heated gases from such stack, whereby thesmoke and steam which accumulates under "the roof is forcibly suckedthrough the outer shell by means of a draft induced by the heated gasesissuing from the top of the inner conductor and passing upn 'ardthrough. the main jack, spacing supports or braces between the main jackand the inner conductor, and a drop jack m with operating gear a,substantially as described.

In testimony whereof, I have signed my name to this specification, inthe presence of two subscribing witnesses.

RICHARD HARCCNTR'I.

Witnesses Anormn G. \VA'rsoN, BENJAMIN T. Wren.

